Onan 6GO-F - Low Temperatures

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ABNORMAL OPERATING CONDITIONS
LOW TEMPERATURES
Lubrication, fuel, and the cooling system require special attention at
temperatures below 320 F. (0
0
C.).
CRANKCASE OIL.- If the plant must be started after standing unused in
temperatures between 320 F. (0
0
C.) and 0
0
F. (-lSO C.) use a. good
quality oil of SAE number 20W in the crankcase. For temperatures below
0
0
F. (-18
0
C.) use SAE number 5W oil. The oil should be the detergent,
or heavy duty type.
If number 5W oil is not obtainable, dilute number lOW oil with approxi-
mately 1 part of kerosene to 4 parts of oil. Thoroughly mix the oil
and kerosene just before pouring into the engine. Immediately start
the plant ana run for at least 10 minutes to thoroughly circulate the
mixture through the engine. Do not put diluted oil into the engine
until ready to start the plrult. Mix the oil well just before pouring
it into the engine. Always use a mixture of the same proportions when
adding oil between changes. When using diluted oil, change the oil
every 25 operating hours and check the oil level frequently. Use un-
diluted oil again as soon as t~dperature conditions permit.
CAUTION
Always drain the oil only when the engine is warm.
Drain the oil filter when changing to a lighter oil.
Add sufficient oil to compensate for that used to
fill the oil filter.
AIR CLEANER.- If congealed oil or frost formation within the air cleaner
restricts the air flow, remove and clean the air cleaner. Reassemble and
use the air cleaner without oil until conditions permit the use of oil
in the normal manner.
COOLING SYSTm.t.- The coolant must be protected if there is any possibU-
ity of its freezing. Use any good antifreeze, in the proportion recom-
.mended
by the manufacturer for the lowest temperature to which the plant
will be exposed. The capacity of the cooling system is approx:imate1y
11 quarts.
If the plMt is to be stored in freezing temperatures, without adding
anti-freeze solution, be sure to open the cylinder block drain cook to
thoroughly drain all water from the block, after draining the radiator.
If the water temperature gauge shows the engine to be operating too cool,
a portion of the radiator surface may be covered to raise the coolant tem-
perature to normal. Avoid overheating. Set the high water temperature
cut-off switch to operate at a temperature several degrees below the boil-
ing point of the coolant, taking into consideration the altitude at which
the plant is operating, and the type of anti-freeze solution used. Check
the antii'reeze solution frequently.
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